The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2014
Filed:
Oct. 22, 2012
Applicant:
Beacon Power, Llc, Tyngsboro, MA (US);
Inventor:
Jimpo Wang, Westford, MA (US);
Assignee:
Beacon Power, LLC, Tyngsboro, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 7/09 (2006.01); F16C 32/04 (2006.01); H02K 7/02 (2006.01);
U.S. Cl.
CPC ...
F16C 32/0465 (2013.01); F16C 2361/55 (2013.01); F16C 32/0468 (2013.01); H02K 7/025 (2013.01); Y02E 60/16 (2013.01); H02K 7/09 (2013.01); F16C 32/0476 (2013.01);
Abstract
A flywheel levitation apparatus and associated method are described for use in a flywheel driven power storage system having a rotor and which provides for an upward vertical movement of the rotor along an axis of rotation. The rotor includes a rotor face defining a cutaway section. A magnetic lifting force is applied to the rotor to at least in part serve in levitating the rotor. The magnetic lifting force exhibits a modified gap sensitivity that is smaller as compared to a conventional gap sensitivity that would be exhibited in an absence of the cutaway section.